Tool for assembling inserts in hose ends



Feb. 28, 1950 B. cOURToT 2,499,056

TooL FOR AssEMBLxNG INSERTS 1N HosE ENDS Filed Nov. 9, 1946 MMM/4g, 4 7

INVENTOR. 'F55' 4 U/` 54 COUTOT BY I v ATTORNE Y5 Patented Feb. 28, 1950 'rooL Fon Ass'EMBLiNG INsER'rs 1N HosE ENns Louis B. Courtot, Cleveland,

Ohio, assignor to 'The Weatherhead Company, Cleveland, Ohio, a corporation of Ohio Application November 9, 1346, Serial No. 708,391

3 Claims.

vinsert or nipple must be inserted into the bore of a hose which has been positioned in a hose end part. Customarily, there is veryx little on rthe hose insert which enables the assembler to obtain a firm grip thereon and, in fact, the insert usually carries an independently rotatable nut or collar member, which makes it diicult to apply any torque to the insert to thread it to the hose end.

It is an object of this invention to provide a tool which grips the insert firmly, enabling the same to be manipulated and threaded into the hose end fitting. Such a hose end assembly offers a comparatively large amount of frictional resistance to the assembly of an insert within the hose end.

It is another object of this invention to provide a tool-in which the gripping action of the tool upon the insert is increased as the resistance to entry of the insert increases, thereby insuring that the tool will not slip in the insert during assembly.

A further object of this invention is in the provision of a tool which will not mar or distort any part of the tting.

These and other objects will be apparent as the following detailed description of my invention proceeds.

In the drawings:

Fig. 1 shows the body the hose before the hose the hose end; Fig. 2 shows a preferred embodiment ofy my fitting part crimped to insert is assembled with y novel tool;

Fig. 3 shows my tool functioning to assemble a hose insert in the hose end; and

4 4shows a modified form of tool.

One style of hose end tting. for which my tool is particularly adapted, includes a body or sleeve member B which is usually positioned about the hose H. The body member has a sleeve portion I which is deformed or corrugated by a crimping operation prior to the hose coupling operation so that a hose section 2 of reduced diameter is formed, it being necessary to force the hose insert through this portion during the assembly operation. The end of the body may be threaded as at 3 to receive mating threads 5 formed on the hose insert I. The nose of the insert is generally tapered as at 4 to facilitate its introduction into the hose. The outer end 2 of the insert has a shouldered portion 6 which retains a nut N by means of a mating shoulder 1 on the nut. Nut N may be threaded as at 8 for cooperationwith the associated fitting.

The tool T shown in Fig. 2 is mounted to firmly `grip the hose insert and nut assembly during assembly of these parts with the hose and fitting body. The tool has a central member indicated generally at I0 formed with a tapered pilot nose portion II. The pilot nosehas a rearward generally radial shoulder I2 connecting with a stem portion I3 which is integral with a threaded stem I4. A handle I5 is provided for the member lll. I prefer that the hand of the threads be opposite to that of the threads 3 and 5 on the fitting. For example, with the conventional right-hand fitting threads, the threads .I4 will b e left-hand threads for reasons to be hereinafter fully described. A sleeve portion IB is threaded to the portion I4 of the tool and is provided with a manipulating knob orgrip member II. The sleeve may have an Unthreaded extension I8 ,which engages a washer I9 slid'ably mounted lon the stem i3. A sleeve 2l rotatably mounted on the stem vI3 is provided, the sleeve having a radial wall 22. The tool is completed Aby the resilient rubber-like sleeve 2li which rests between the radial walls formed by Wall 22 of the sleeve 2| and the washer I9 that engagesA the outer tool member. t p t In operation, the vtool is slipped into the bore l) lof thehose insert I, so that the rubber member 20 rests within the bore of the insert and the pilot nose II projects outwardly therefrom. Then grip member I1 and handle I5 are grasped and rotated relative to one another, the result being thatv the recess containing the rubber member 20 is shortened axially. For example, if the threads 3 and 5 are right-handed, the threads I4 Awillbe left-handed, and the desired gripping` action can be obtained by holding grip l1 and turning handle I5 to the right. This causes nose Il and the sleeve I6 to approach one another causing the rubber sleeve 2o to be expanded tightly against the bore 9 of the hose insert. As the insert I is threaded into 'the body B by means of the handle I5, the resistance to insertion oi' the insert, caused by the reduced section 2 of the hose, tends to hold the insert and hence rubber member 20 from rotation. When this hap pens, a torque on the handle tends to move stem I0 to the right relative to the rubber sleeve 20 and since threads I4 are left-handed threads, this causes the stem I0 to advance to the right in the figure, axially shortening the recess for the rubber and increasing pressure of the rubber against the hose insert. Since the area of contact between rubber sleeve 20 and the hose inf sert is greater than between the rubber member and stem I3, the above described self-tightening surrounded by rubber sleeve20a. .However,the

sleeve member |6a is modified tolprovidefmseries of thin axial ngers 30. These may be formed by reducing the wall thickness of .the end of the sleeve and cutting slots 3l therein as indicated. The washer 32 is provided to provide af-.wallfor the end of the rubber sleeve 20a in order that it `be axially compressed. 'Ihe modied'iteol 'ifunctions like-.thai-...previously described, the only .difference ybeingv that. as .the-.metal parts .L01 and 16a are ...rota-tedrelative .to Ione anotherv so.. as to ,shorten .the recess containing the-.rubber sleeve, l.thametalfingers,30;..ai:e..urgedfradially.outwardly Lraga-inst .thebore 9. of. thehose insert .bytherubber memben '.This makes ,the .self-locking action. de-

' scribed :previously y.more .positive in Athainsleeve Vl.member l6a..isrmly= heldagainst,rotatiorrrela-- tive vlto .the insert. Thus, fif.. increased .resistance is .encounteredastem member L0.is.l certain.to..ro zitate relative to ythesleeve memberiandcauseiurther expansion, of. .the rubber- .sleeve 2l1a. Yagainst fjthehose .insert asldescribedprevionsly. v .Although .I have -shown .washers I9 and. 32 as forming .one wall for therubbensleevethis strucllture is .merely to -,facilitate ,manufacture .and ..1

contemplate that these .washers .could be disjpensed withlor .could beormedasintegral parts ;ofithe metalsleevemember ,ofv.the..tool. .Various rlesign details. may. lbe vmodiied inaccordance .with machine. .designpractice .withoutldepartinglfrom the .essence o'f .my 'invention whichprovides` an ,axially compressible. .rubber-'like v.gripping .memiberltogfirmly .gripthehose insert. during assembly [with threaded engagement ybetween .the .tool-,parts such that the ,gripping action -is .automatically 'augmented as resistance Jcoadvance Aof .theinsert l'in the hose increases. Althoughl .have .described fapreferred :embodi- ;,m ent, I contemplatethat` the laimsand .not-that :.embodimentkbe determinative ocithesoope .offmy invention. isi;:laimed'is: v

. ill. ,.A. "15001 for assembling a. hose insert intona hoseendeomprising. aiirstV member' havingza'nose ,dlortion, an vintermediate';. portion .of reduced sec- --ton,;a threadedgportion and a grip, a'sleeve mem- .'ber threaded to the.`fir'st,memberand havinga grimaud an end :portion.axially` vspaced'. from-said pnose; portion, ,whereby said nose portion Sinterme'diate portion Aof vreduced section and ',.the end 4 of said sleeve member form an axially shortenable annular recess, the end portion of said sleeve having a plurality of flexible fingers, and a rubber-like member in said recess and underlying 5 said ngers for gripping the hose insert upon relative motion of said members.

,2. A .tool for threading .a threaded hose insert :into aihose, encleassembly comprising'a rst member having a'nose portion with rearwardly-facing flshoulder means, an intermediate portion of reduced section, a uniformly threaded portion and a fgrip,a` sleeve member threaded to the rst member, said sleeve member having a grip and a forwardly-,facing shoulder means spaced axially l5 rearwardlyof said nose portion shoulder means,

whereby,saidxnose portion shoulder means, intermediate portion of reduced section, and the v` shoulderrneans 4of--said sleeve member form an laxially shortenable annular recess, and a rubberlike member in said recess and engaging said .shoulder means, said noseportion and rubber-.like memberbeing insertable in the hose insert, Vsaid rst member being threaded oppositely to the `hose insert whereby resistance to threadingthe iinsert .into the yfitting body causes axial compression oftherubber-like member to iirmlygrip .the hose insert.

3. Atool for threading a threaded hoseinsert into ahose end assembly comprising airst member havinga nose portion with rearwardly-facing xshoulder means, an.intermediate portion of reduced section, a uniformly threaded portion and a. grip, a sleeve member threaded to the iirst member, said sleeve member having `a grip, forwardlyfacing shoulder means spaced axially rearwardly `of saidnoseportion shoulder means, and aplurality of flexible fingers, whereby'saidnosepor- Ation shoulder means, intermediate portion of .re- ,duced section,.and the shoulder means of sai'd gg sleeve lmember form an axially shortenableannular recess, and a rubber-like member in :said recess, engaging said shoulder means, .and 11n- A'derlyirrg-.said ngers, said nose portion'and'rubber-like member being'insertable inthe hose insert, saidfirst member being threaded oppositely to the Vhose insert whereby'resistanceto'threading the insert into the fitting body-causes axial :compression ofthe rubber-like member'to'iirmly -gripthe hoselinsert.

5o LoUIsB. coURTol'r.

` REFERENCES CITED The following references are .of .recordjn `the UNITED STATES PATENTS Wagner Apr. 16, .1935 

